/Engine/Source/Runtime/AIModule/Classes/Perception/PawnSensingComponent.h
Chance of seeing other pawn decreases with increasing distance or angle in peripheral vision
true if the specified pawn Other is potentially visible (within peripheral vision, etc.) - still need to do LineOfSightTo() check to see if actually visible.
virtual bool CouldSeePawn ( const [APawn](API\Runtime\Engine\GameFramework\APawn) * Other, bool bMaySkipChecks ) const